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acosentino pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/camel-kamelets-examples.git
commit 5b0c70a46c280a17d8b775a0d35e5e3a00b6a8f2
Author: Andrea Cosentino <anco...@gmail.com>
AuthorDate: Tue Oct 10 13:46:33 2023 +0200
Added an example of Apicurio Registry Usage with Kafka through YAML
Signed-off-by: Andrea Cosentino <anco...@gmail.com>
---
jbang/kafka-apicurio-schema-registry/README.md | 81 +++
.../application.properties | 2 +
.../kafka-apicurio-schema-registry/kafka-log.yaml | 42 ++
.../kafka-producer/pom.xml | 78 +++
.../kafka-producer/src/main/avro/order.avsc | 33 +
.../main/java/com/acme/example/kafka/Produce.java | 70 +++
.../java/com/acme/example/kafka/models/Order.java | 673 +++++++++++++++++++++
7 files changed, 979 insertions(+)
diff --git a/jbang/kafka-apicurio-schema-registry/README.md
b/jbang/kafka-apicurio-schema-registry/README.md
new file mode 100644
index 0000000..5e60ee0
--- /dev/null
+++ b/jbang/kafka-apicurio-schema-registry/README.md
@@ -0,0 +1,81 @@
+# Example for consuming from Kafka with the usage of Apicurio Schema Registry
and Avro
+
+You'll need a running Kafka instance and an Apicurio Registry
+
+## Kafka instance
+
+You could use a plain Kafka archive or use an Ansible role
+
+## Apicurio Registry
+
+```bash
+docker run -it -p 8080:8080 apicurio/apicurio-registry-mem:2.4.12.Final
+```
+
+This will run an Apicurio Registry instance with in-memory persistence.
+
+## Configure the applications
+
+In `application.properties` set the Kafka instance address and the Apicurio
schema registry URL.
+
+## Produce to Kafka.
+
+Run
[`Produce.java`](./kafka-producer/src/main/java/com/acme/example/kafka/Produce.java)
to produce a message to the Kafka.
+
+```bash
+mvn compile exec:java -Dexec.mainClass="com.acme.example.kafka.Produce"
+```
+
+## Consume from Kafka.
+
+To consume messages using a Camel route, first install the azure identity
maven project:
+```bash
+cd kafka-producer
+mvn clean install
+```
+then run:
+```bash
+camel run kafka-log.yaml
+```
+
+You should see something like
+
+```bash
+2023-10-10 13:44:09.810 INFO 71770 --- [ main]
el.impl.engine.AbstractCamelContext : Routes startup (started:2)
+2023-10-10 13:44:09.810 INFO 71770 --- [ main]
el.impl.engine.AbstractCamelContext : Started kafka-to-log
(kafka://my-topic)
+2023-10-10 13:44:09.810 INFO 71770 --- [ main]
el.impl.engine.AbstractCamelContext : Started log-sink-1 (kamelet://source)
+2023-10-10 13:44:09.810 INFO 71770 --- [ main]
el.impl.engine.AbstractCamelContext : Apache Camel 4.0.1 (kafka-log) started in
187ms (build:0ms init:0ms start:187ms)
+2023-10-10 13:44:10.018 WARN 71770 --- [sumer[my-topic]]
fka.clients.consumer.ConsumerConfig : These configurations
'[apicurio.registry.avroDatumProvider, apicurio.registry.url]' were supplied
but are not used yet.
+2023-10-10 13:44:10.019 INFO 71770 --- [sumer[my-topic]]
he.kafka.common.utils.AppInfoParser : Kafka version: 3.4.0
+2023-10-10 13:44:10.019 INFO 71770 --- [sumer[my-topic]]
he.kafka.common.utils.AppInfoParser : Kafka commitId: 2e1947d240607d53
+2023-10-10 13:44:10.019 INFO 71770 --- [sumer[my-topic]]
he.kafka.common.utils.AppInfoParser : Kafka startTimeMs: 1696938250018
+2023-10-10 13:44:10.023 INFO 71770 --- [sumer[my-topic]]
ort.classic.AssignmentAdapterHelper : Using NO-OP resume strategy
+2023-10-10 13:44:10.023 INFO 71770 --- [sumer[my-topic]]
l.component.kafka.KafkaFetchRecords : Subscribing my-topic-Thread 0 to topic
my-topic
+2023-10-10 13:44:10.024 INFO 71770 --- [sumer[my-topic]]
afka.clients.consumer.KafkaConsumer : [Consumer
clientId=consumer-my-consumer-group-1, groupId=my-consumer-group] Subscribed to
topic(s): my-topic
+2023-10-10 13:44:10.254 INFO 71770 --- [sumer[my-topic]]
org.apache.kafka.clients.Metadata : [Consumer
clientId=consumer-my-consumer-group-1, groupId=my-consumer-group] Resetting the
last seen epoch of partition my-topic-0 to 0 since the associated topicId
changed from null to PP5gKKwZTTOwYYvKftvhgA
+2023-10-10 13:44:10.256 INFO 71770 --- [sumer[my-topic]]
org.apache.kafka.clients.Metadata : [Consumer
clientId=consumer-my-consumer-group-1, groupId=my-consumer-group] Cluster ID:
LGe3ByI8SLSis9Sm9zcCVg
+2023-10-10 13:44:10.257 INFO 71770 --- [sumer[my-topic]]
sumer.internals.ConsumerCoordinator : [Consumer
clientId=consumer-my-consumer-group-1, groupId=my-consumer-group] Discovered
group coordinator ghost:9092 (id: 2147483647 rack: null)
+2023-10-10 13:44:10.263 INFO 71770 --- [sumer[my-topic]]
sumer.internals.ConsumerCoordinator : [Consumer
clientId=consumer-my-consumer-group-1, groupId=my-consumer-group] (Re-)joining
group
+2023-10-10 13:44:10.276 INFO 71770 --- [sumer[my-topic]]
sumer.internals.ConsumerCoordinator : [Consumer
clientId=consumer-my-consumer-group-1, groupId=my-consumer-group] Request
joining group due to: need to re-join with the given member-id:
consumer-my-consumer-group-1-88145d04-879c-4cd9-9f5a-53a2c6778033
+2023-10-10 13:44:10.278 INFO 71770 --- [sumer[my-topic]]
sumer.internals.ConsumerCoordinator : [Consumer
clientId=consumer-my-consumer-group-1, groupId=my-consumer-group] Request
joining group due to: rebalance failed due to 'The group member needs to have a
valid member id before actually entering a consumer group.'
(MemberIdRequiredException)
+2023-10-10 13:44:10.278 INFO 71770 --- [sumer[my-topic]]
sumer.internals.ConsumerCoordinator : [Consumer
clientId=consumer-my-consumer-group-1, groupId=my-consumer-group] (Re-)joining
group
+2023-10-10 13:44:10.283 INFO 71770 --- [sumer[my-topic]]
sumer.internals.ConsumerCoordinator : [Consumer
clientId=consumer-my-consumer-group-1, groupId=my-consumer-group] Successfully
joined group with generation Generation{generationId=19,
memberId='consumer-my-consumer-group-1-88145d04-879c-4cd9-9f5a-53a2c6778033',
protocol='range'}
+2023-10-10 13:44:10.285 INFO 71770 --- [sumer[my-topic]]
sumer.internals.ConsumerCoordinator : [Consumer
clientId=consumer-my-consumer-group-1, groupId=my-consumer-group] Finished
assignment for group at generation 19:
{consumer-my-consumer-group-1-88145d04-879c-4cd9-9f5a-53a2c6778033=Assignment(partitions=[my-topic-0])}
+2023-10-10 13:44:10.292 INFO 71770 --- [sumer[my-topic]]
sumer.internals.ConsumerCoordinator : [Consumer
clientId=consumer-my-consumer-group-1, groupId=my-consumer-group] Successfully
synced group in generation Generation{generationId=19,
memberId='consumer-my-consumer-group-1-88145d04-879c-4cd9-9f5a-53a2c6778033',
protocol='range'}
+2023-10-10 13:44:10.294 INFO 71770 --- [sumer[my-topic]]
sumer.internals.ConsumerCoordinator : [Consumer
clientId=consumer-my-consumer-group-1, groupId=my-consumer-group] Notifying
assignor about the new Assignment(partitions=[my-topic-0])
+2023-10-10 13:44:10.298 INFO 71770 --- [sumer[my-topic]]
sumer.internals.ConsumerCoordinator : [Consumer
clientId=consumer-my-consumer-group-1, groupId=my-consumer-group] Adding newly
assigned partitions: my-topic-0
+2023-10-10 13:44:10.314 INFO 71770 --- [sumer[my-topic]]
sumer.internals.ConsumerCoordinator : [Consumer
clientId=consumer-my-consumer-group-1, groupId=my-consumer-group] Setting
offset for partition my-topic-0 to the committed offset
FetchPosition{offset=11, offsetEpoch=Optional[0],
currentLeader=LeaderAndEpoch{leader=Optional[ghost:9092 (id: 0 rack: null)],
epoch=0}}
+```
+
+and after a message has been produced to Kafka you should see
+
+```bash
+2023-10-10 13:44:10.519 INFO 71770 --- [sumer[my-topic]] log-sink
: Exchange[
+ ExchangePattern: InOnly
+ Headers: {apicurio.value.encoding=[B@474baada,
apicurio.value.globalId=[B@28e32105, CamelMessageTimestamp=1696938203819,
kafka.HEADERS=RecordHeaders(headers = [RecordHeader(key =
apicurio.value.globalId, value = [0, 0, 0, 0, 0, 0, 0, 3]), RecordHeader(key =
apicurio.value.encoding, value = [66, 73, 78, 65, 82, 89])], isReadOnly =
false), kafka.KEY=key, kafka.OFFSET=11, kafka.PARTITION=0,
kafka.TIMESTAMP=1696938203819, kafka.TOPIC=my-topic}
+ BodyType: org.apache.avro.generic.GenericData.Record
+ Body: {"orderId": 1, "itemId": "item", "userId": "user", "quantity": 3.0,
"description": "A really nice item I do love"}
+]
+```
+
+
diff --git a/jbang/kafka-apicurio-schema-registry/application.properties
b/jbang/kafka-apicurio-schema-registry/application.properties
new file mode 100644
index 0000000..d491e63
--- /dev/null
+++ b/jbang/kafka-apicurio-schema-registry/application.properties
@@ -0,0 +1,2 @@
+bootstrap.servers=localhost:9092
+topic=my-topic
diff --git a/jbang/kafka-apicurio-schema-registry/kafka-log.yaml
b/jbang/kafka-apicurio-schema-registry/kafka-log.yaml
new file mode 100644
index 0000000..9ca2187
--- /dev/null
+++ b/jbang/kafka-apicurio-schema-registry/kafka-log.yaml
@@ -0,0 +1,42 @@
+## ---------------------------------------------------------------------------
+## Licensed to the Apache Software Foundation (ASF) under one or more
+## contributor license agreements. See the NOTICE file distributed with
+## this work for additional information regarding copyright ownership.
+## The ASF licenses this file to You under the Apache License, Version 2.0
+## (the "License"); you may not use this file except in compliance with
+## the License. You may obtain a copy of the License at
+##
+## http://www.apache.org/licenses/LICENSE-2.0
+##
+## Unless required by applicable law or agreed to in writing, software
+## distributed under the License is distributed on an "AS IS" BASIS,
+## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+## See the License for the specific language governing permissions and
+## limitations under the License.
+## ---------------------------------------------------------------------------
+
+# camel-k: dependency=mvn:com.acme.example:kafka-apicurio-producer:0.1
+# camel-k:
dependency=mvn:io.apicurio:apicurio-registry-serdes-avro-serde:2.4.12.Final
+
+- beans:
+ - name: order
+ type: "#class:com.acme.example.kafka.models.Order"
+
+- route:
+ id: "kafka-to-log"
+ from:
+ uri: "kafka:{{topic}}"
+ parameters:
+ autoOffsetReset: earliest
+ brokers: "{{bootstrap.servers}}"
+ groupId: 'my-consumer-group'
+ valueDeserializer:
'io.apicurio.registry.serde.avro.AvroKafkaDeserializer'
+ additionalProperties.apicurio.registry.url:
'http://localhost:8080/apis/registry/v2'
+ additionalProperties.apicurio.registry.avro-datum-provider:
'io.apicurio.registry.serde.avro.ReflectAvroDatumProvider'
+ steps:
+ - to:
+ uri: "kamelet:log-sink"
+ parameters:
+ showStreams: true
+ showHeaders: true
+ multiline: true
diff --git a/jbang/kafka-apicurio-schema-registry/kafka-producer/pom.xml
b/jbang/kafka-apicurio-schema-registry/kafka-producer/pom.xml
new file mode 100644
index 0000000..fb16f3d
--- /dev/null
+++ b/jbang/kafka-apicurio-schema-registry/kafka-producer/pom.xml
@@ -0,0 +1,78 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/maven-v4_0_0.xsd";>
+ <modelVersion>4.0.0</modelVersion>
+ <groupId>com.acme.example</groupId>
+ <artifactId>kafka-apicurio-producer</artifactId>
+ <packaging>jar</packaging>
+ <version>0.1</version>
+ <name>kafka-apicurio-prod</name>
+ <url>http://maven.apache.org</url>
+ <dependencies>
+
+ <dependency>
+ <groupId>io.apicurio</groupId>
+ <artifactId>apicurio-registry-serdes-avro-serde</artifactId>
+ <version>2.4.12.Final</version>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.kafka</groupId>
+ <artifactId>kafka-clients</artifactId>
+ <version>3.4.0</version>
+ </dependency>
+ <dependency>
+ <groupId>org.apache.avro</groupId>
+ <artifactId>avro</artifactId>
+ <version>1.11.3</version>
+ </dependency>
+ <dependency>
+ <groupId>org.slf4j</groupId>
+ <artifactId>slf4j-api</artifactId>
+ <version>2.0.7</version>
+ </dependency>
+ <dependency>
+ <groupId>org.slf4j</groupId>
+ <artifactId>slf4j-simple</artifactId>
+ <version>2.0.7</version>
+ </dependency>
+
+ <dependency>
+ <groupId>junit</groupId>
+ <artifactId>junit</artifactId>
+ <version>3.8.1</version>
+ <scope>test</scope>
+ </dependency>
+ </dependencies>
+
+ <build>
+ <plugins>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-compiler-plugin</artifactId>
+ <version>3.11.0</version>
+ <configuration>
+ <source>17</source>
+ <target>17</target>
+ </configuration>
+ </plugin>
+
+ <plugin>
+ <groupId>org.apache.avro</groupId>
+ <artifactId>avro-maven-plugin</artifactId>
+ <version>1.11.3</version>
+ <executions>
+ <execution>
+ <phase>generate-sources</phase>
+ <goals>
+ <goal>schema</goal>
+ </goals>
+ <configuration>
+ <sourceDirectory>src/main/avro</sourceDirectory>
+
<outputDirectory>${project.basedir}/src/main/java</outputDirectory>
+ <stringType>String</stringType>
+ </configuration>
+ </execution>
+ </executions>
+ </plugin>
+ </plugins>
+ </build>
+</project>
diff --git
a/jbang/kafka-apicurio-schema-registry/kafka-producer/src/main/avro/order.avsc
b/jbang/kafka-apicurio-schema-registry/kafka-producer/src/main/avro/order.avsc
new file mode 100644
index 0000000..e41753e
--- /dev/null
+++
b/jbang/kafka-apicurio-schema-registry/kafka-producer/src/main/avro/order.avsc
@@ -0,0 +1,33 @@
+{
+ "doc": "Fact schema of an order",
+ "fields": [
+ {
+ "doc": "Unique id of the order.",
+ "name": "orderId",
+ "type": "int"
+ },
+ {
+ "doc": "Id of the ordered item.",
+ "name": "itemId",
+ "type": "string"
+ },
+ {
+ "doc": "Id of the user who ordered the item.",
+ "name": "userId",
+ "type": "string"
+ },
+ {
+ "doc": "How much was ordered.",
+ "name": "quantity",
+ "type": "double"
+ },
+ {
+ "doc": "Description of item.",
+ "name": "description",
+ "type": "string"
+ }
+ ],
+ "name": "Order",
+ "namespace": "com.acme.example.kafka.models",
+ "type": "record"
+}
diff --git
a/jbang/kafka-apicurio-schema-registry/kafka-producer/src/main/java/com/acme/example/kafka/Produce.java
b/jbang/kafka-apicurio-schema-registry/kafka-producer/src/main/java/com/acme/example/kafka/Produce.java
new file mode 100644
index 0000000..856c903
--- /dev/null
+++
b/jbang/kafka-apicurio-schema-registry/kafka-producer/src/main/java/com/acme/example/kafka/Produce.java
@@ -0,0 +1,70 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.acme.example.kafka;
+
+import com.acme.example.kafka.models.Order;
+import io.apicurio.registry.serde.SerdeConfig;
+import io.apicurio.registry.serde.avro.AvroKafkaSerializer;
+import io.apicurio.registry.serde.avro.AvroKafkaSerdeConfig;
+import org.apache.kafka.clients.producer.KafkaProducer;
+import org.apache.kafka.clients.producer.ProducerConfig;
+import org.apache.kafka.clients.producer.ProducerRecord;
+import org.apache.kafka.clients.producer.RecordMetadata;
+import org.apache.kafka.common.serialization.StringSerializer;
+import io.apicurio.registry.serde.avro.ReflectAvroDatumProvider;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.Properties;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+
+public class Produce {
+
+ private static final String REGISTRY_URL =
"http://localhost:8080/apis/registry/v2";;
+ public static final String DEFAULT_PROPERTIES_PATH =
"../application.properties";
+
+ public static void main(String[] args) throws IOException {
+ String propertiesPath = DEFAULT_PROPERTIES_PATH;
+ if (args.length >= 1) {
+ propertiesPath = args[0];
+ }
+
+ Properties properties = new Properties();
+ properties.load(Files.newInputStream(Paths.get(propertiesPath)));
+
+ properties.put(SerdeConfig.REGISTRY_URL, REGISTRY_URL);
+ properties.put(SerdeConfig.AUTO_REGISTER_ARTIFACT, Boolean.TRUE);
+ properties.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG,
StringSerializer.class);
+ properties.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG,
AvroKafkaSerializer.class);
+
+ properties.put(AvroKafkaSerdeConfig.AVRO_DATUM_PROVIDER,
ReflectAvroDatumProvider.class.getName());
+
+ try (KafkaProducer<String, Order> orderProducer = new
KafkaProducer<>(properties)) {
+ Order order = new Order(1, "item", "user", 3.0, "A really nice
item I do love");
+ String topic = properties.getProperty("topic");
+ ProducerRecord<String, Order> record = new ProducerRecord<>(topic,
"key", order);
+ RecordMetadata result = orderProducer.send(record).get(5,
TimeUnit.SECONDS);
+ System.out.println("Sent record with offset " + result.offset());
+ } catch (ExecutionException | InterruptedException | TimeoutException
e) {
+ e.printStackTrace();
+ System.exit(1);
+ }
+ }
+}
diff --git
a/jbang/kafka-apicurio-schema-registry/kafka-producer/src/main/java/com/acme/example/kafka/models/Order.java
b/jbang/kafka-apicurio-schema-registry/kafka-producer/src/main/java/com/acme/example/kafka/models/Order.java
new file mode 100644
index 0000000..c559447
--- /dev/null
+++
b/jbang/kafka-apicurio-schema-registry/kafka-producer/src/main/java/com/acme/example/kafka/models/Order.java
@@ -0,0 +1,673 @@
+/**
+ * Autogenerated by Avro
+ *
+ * DO NOT EDIT DIRECTLY
+ */
+package com.acme.example.kafka.models;
+
+import org.apache.avro.generic.GenericArray;
+import org.apache.avro.specific.SpecificData;
+import org.apache.avro.util.Utf8;
+import org.apache.avro.message.BinaryMessageEncoder;
+import org.apache.avro.message.BinaryMessageDecoder;
+import org.apache.avro.message.SchemaStore;
+
+/** Fact schema of an order */
+@org.apache.avro.specific.AvroGenerated
+public class Order extends org.apache.avro.specific.SpecificRecordBase
implements org.apache.avro.specific.SpecificRecord {
+ private static final long serialVersionUID = -8676937297320921983L;
+
+
+ public static final org.apache.avro.Schema SCHEMA$ = new
org.apache.avro.Schema.Parser().parse("{\"type\":\"record\",\"name\":\"Order\",\"namespace\":\"com.acme.example.kafka.models\",\"doc\":\"Fact
schema of an
order\",\"fields\":[{\"name\":\"orderId\",\"type\":\"int\",\"doc\":\"Unique id
of the
order.\"},{\"name\":\"itemId\",\"type\":{\"type\":\"string\",\"avro.java.string\":\"String\"},\"doc\":\"Id
of the ordered
item.\"},{\"name\":\"userId\",\"type\":{\"type\":\"string\",\"avro.jav [...]
+ public static org.apache.avro.Schema getClassSchema() { return SCHEMA$; }
+
+ private static final SpecificData MODEL$ = new SpecificData();
+
+ private static final BinaryMessageEncoder<Order> ENCODER =
+ new BinaryMessageEncoder<>(MODEL$, SCHEMA$);
+
+ private static final BinaryMessageDecoder<Order> DECODER =
+ new BinaryMessageDecoder<>(MODEL$, SCHEMA$);
+
+ /**
+ * Return the BinaryMessageEncoder instance used by this class.
+ * @return the message encoder used by this class
+ */
+ public static BinaryMessageEncoder<Order> getEncoder() {
+ return ENCODER;
+ }
+
+ /**
+ * Return the BinaryMessageDecoder instance used by this class.
+ * @return the message decoder used by this class
+ */
+ public static BinaryMessageDecoder<Order> getDecoder() {
+ return DECODER;
+ }
+
+ /**
+ * Create a new BinaryMessageDecoder instance for this class that uses the
specified {@link SchemaStore}.
+ * @param resolver a {@link SchemaStore} used to find schemas by fingerprint
+ * @return a BinaryMessageDecoder instance for this class backed by the
given SchemaStore
+ */
+ public static BinaryMessageDecoder<Order> createDecoder(SchemaStore
resolver) {
+ return new BinaryMessageDecoder<>(MODEL$, SCHEMA$, resolver);
+ }
+
+ /**
+ * Serializes this Order to a ByteBuffer.
+ * @return a buffer holding the serialized data for this instance
+ * @throws java.io.IOException if this instance could not be serialized
+ */
+ public java.nio.ByteBuffer toByteBuffer() throws java.io.IOException {
+ return ENCODER.encode(this);
+ }
+
+ /**
+ * Deserializes a Order from a ByteBuffer.
+ * @param b a byte buffer holding serialized data for an instance of this
class
+ * @return a Order instance decoded from the given buffer
+ * @throws java.io.IOException if the given bytes could not be deserialized
into an instance of this class
+ */
+ public static Order fromByteBuffer(
+ java.nio.ByteBuffer b) throws java.io.IOException {
+ return DECODER.decode(b);
+ }
+
+ /** Unique id of the order. */
+ private int orderId;
+ /** Id of the ordered item. */
+ private java.lang.String itemId;
+ /** Id of the user who ordered the item. */
+ private java.lang.String userId;
+ /** How much was ordered. */
+ private double quantity;
+ /** Description of item. */
+ private java.lang.String description;
+
+ /**
+ * Default constructor. Note that this does not initialize fields
+ * to their default values from the schema. If that is desired then
+ * one should use <code>newBuilder()</code>.
+ */
+ public Order() {}
+
+ /**
+ * All-args constructor.
+ * @param orderId Unique id of the order.
+ * @param itemId Id of the ordered item.
+ * @param userId Id of the user who ordered the item.
+ * @param quantity How much was ordered.
+ * @param description Description of item.
+ */
+ public Order(java.lang.Integer orderId, java.lang.String itemId,
java.lang.String userId, java.lang.Double quantity, java.lang.String
description) {
+ this.orderId = orderId;
+ this.itemId = itemId;
+ this.userId = userId;
+ this.quantity = quantity;
+ this.description = description;
+ }
+
+ @Override
+ public org.apache.avro.specific.SpecificData getSpecificData() { return
MODEL$; }
+
+ @Override
+ public org.apache.avro.Schema getSchema() { return SCHEMA$; }
+
+ // Used by DatumWriter. Applications should not call.
+ @Override
+ public java.lang.Object get(int field$) {
+ switch (field$) {
+ case 0: return orderId;
+ case 1: return itemId;
+ case 2: return userId;
+ case 3: return quantity;
+ case 4: return description;
+ default: throw new IndexOutOfBoundsException("Invalid index: " + field$);
+ }
+ }
+
+ // Used by DatumReader. Applications should not call.
+ @Override
+ @SuppressWarnings(value="unchecked")
+ public void put(int field$, java.lang.Object value$) {
+ switch (field$) {
+ case 0: orderId = (java.lang.Integer)value$; break;
+ case 1: itemId = value$ != null ? value$.toString() : null; break;
+ case 2: userId = value$ != null ? value$.toString() : null; break;
+ case 3: quantity = (java.lang.Double)value$; break;
+ case 4: description = value$ != null ? value$.toString() : null; break;
+ default: throw new IndexOutOfBoundsException("Invalid index: " + field$);
+ }
+ }
+
+ /**
+ * Gets the value of the 'orderId' field.
+ * @return Unique id of the order.
+ */
+ public int getOrderId() {
+ return orderId;
+ }
+
+
+ /**
+ * Sets the value of the 'orderId' field.
+ * Unique id of the order.
+ * @param value the value to set.
+ */
+ public void setOrderId(int value) {
+ this.orderId = value;
+ }
+
+ /**
+ * Gets the value of the 'itemId' field.
+ * @return Id of the ordered item.
+ */
+ public java.lang.String getItemId() {
+ return itemId;
+ }
+
+
+ /**
+ * Sets the value of the 'itemId' field.
+ * Id of the ordered item.
+ * @param value the value to set.
+ */
+ public void setItemId(java.lang.String value) {
+ this.itemId = value;
+ }
+
+ /**
+ * Gets the value of the 'userId' field.
+ * @return Id of the user who ordered the item.
+ */
+ public java.lang.String getUserId() {
+ return userId;
+ }
+
+
+ /**
+ * Sets the value of the 'userId' field.
+ * Id of the user who ordered the item.
+ * @param value the value to set.
+ */
+ public void setUserId(java.lang.String value) {
+ this.userId = value;
+ }
+
+ /**
+ * Gets the value of the 'quantity' field.
+ * @return How much was ordered.
+ */
+ public double getQuantity() {
+ return quantity;
+ }
+
+
+ /**
+ * Sets the value of the 'quantity' field.
+ * How much was ordered.
+ * @param value the value to set.
+ */
+ public void setQuantity(double value) {
+ this.quantity = value;
+ }
+
+ /**
+ * Gets the value of the 'description' field.
+ * @return Description of item.
+ */
+ public java.lang.String getDescription() {
+ return description;
+ }
+
+
+ /**
+ * Sets the value of the 'description' field.
+ * Description of item.
+ * @param value the value to set.
+ */
+ public void setDescription(java.lang.String value) {
+ this.description = value;
+ }
+
+ /**
+ * Creates a new Order RecordBuilder.
+ * @return A new Order RecordBuilder
+ */
+ public static com.acme.example.kafka.models.Order.Builder newBuilder() {
+ return new com.acme.example.kafka.models.Order.Builder();
+ }
+
+ /**
+ * Creates a new Order RecordBuilder by copying an existing Builder.
+ * @param other The existing builder to copy.
+ * @return A new Order RecordBuilder
+ */
+ public static com.acme.example.kafka.models.Order.Builder
newBuilder(com.acme.example.kafka.models.Order.Builder other) {
+ if (other == null) {
+ return new com.acme.example.kafka.models.Order.Builder();
+ } else {
+ return new com.acme.example.kafka.models.Order.Builder(other);
+ }
+ }
+
+ /**
+ * Creates a new Order RecordBuilder by copying an existing Order instance.
+ * @param other The existing instance to copy.
+ * @return A new Order RecordBuilder
+ */
+ public static com.acme.example.kafka.models.Order.Builder
newBuilder(com.acme.example.kafka.models.Order other) {
+ if (other == null) {
+ return new com.acme.example.kafka.models.Order.Builder();
+ } else {
+ return new com.acme.example.kafka.models.Order.Builder(other);
+ }
+ }
+
+ /**
+ * RecordBuilder for Order instances.
+ */
+ @org.apache.avro.specific.AvroGenerated
+ public static class Builder extends
org.apache.avro.specific.SpecificRecordBuilderBase<Order>
+ implements org.apache.avro.data.RecordBuilder<Order> {
+
+ /** Unique id of the order. */
+ private int orderId;
+ /** Id of the ordered item. */
+ private java.lang.String itemId;
+ /** Id of the user who ordered the item. */
+ private java.lang.String userId;
+ /** How much was ordered. */
+ private double quantity;
+ /** Description of item. */
+ private java.lang.String description;
+
+ /** Creates a new Builder */
+ private Builder() {
+ super(SCHEMA$, MODEL$);
+ }
+
+ /**
+ * Creates a Builder by copying an existing Builder.
+ * @param other The existing Builder to copy.
+ */
+ private Builder(com.acme.example.kafka.models.Order.Builder other) {
+ super(other);
+ if (isValidValue(fields()[0], other.orderId)) {
+ this.orderId = data().deepCopy(fields()[0].schema(), other.orderId);
+ fieldSetFlags()[0] = other.fieldSetFlags()[0];
+ }
+ if (isValidValue(fields()[1], other.itemId)) {
+ this.itemId = data().deepCopy(fields()[1].schema(), other.itemId);
+ fieldSetFlags()[1] = other.fieldSetFlags()[1];
+ }
+ if (isValidValue(fields()[2], other.userId)) {
+ this.userId = data().deepCopy(fields()[2].schema(), other.userId);
+ fieldSetFlags()[2] = other.fieldSetFlags()[2];
+ }
+ if (isValidValue(fields()[3], other.quantity)) {
+ this.quantity = data().deepCopy(fields()[3].schema(), other.quantity);
+ fieldSetFlags()[3] = other.fieldSetFlags()[3];
+ }
+ if (isValidValue(fields()[4], other.description)) {
+ this.description = data().deepCopy(fields()[4].schema(),
other.description);
+ fieldSetFlags()[4] = other.fieldSetFlags()[4];
+ }
+ }
+
+ /**
+ * Creates a Builder by copying an existing Order instance
+ * @param other The existing instance to copy.
+ */
+ private Builder(com.acme.example.kafka.models.Order other) {
+ super(SCHEMA$, MODEL$);
+ if (isValidValue(fields()[0], other.orderId)) {
+ this.orderId = data().deepCopy(fields()[0].schema(), other.orderId);
+ fieldSetFlags()[0] = true;
+ }
+ if (isValidValue(fields()[1], other.itemId)) {
+ this.itemId = data().deepCopy(fields()[1].schema(), other.itemId);
+ fieldSetFlags()[1] = true;
+ }
+ if (isValidValue(fields()[2], other.userId)) {
+ this.userId = data().deepCopy(fields()[2].schema(), other.userId);
+ fieldSetFlags()[2] = true;
+ }
+ if (isValidValue(fields()[3], other.quantity)) {
+ this.quantity = data().deepCopy(fields()[3].schema(), other.quantity);
+ fieldSetFlags()[3] = true;
+ }
+ if (isValidValue(fields()[4], other.description)) {
+ this.description = data().deepCopy(fields()[4].schema(),
other.description);
+ fieldSetFlags()[4] = true;
+ }
+ }
+
+ /**
+ * Gets the value of the 'orderId' field.
+ * Unique id of the order.
+ * @return The value.
+ */
+ public int getOrderId() {
+ return orderId;
+ }
+
+
+ /**
+ * Sets the value of the 'orderId' field.
+ * Unique id of the order.
+ * @param value The value of 'orderId'.
+ * @return This builder.
+ */
+ public com.acme.example.kafka.models.Order.Builder setOrderId(int value) {
+ validate(fields()[0], value);
+ this.orderId = value;
+ fieldSetFlags()[0] = true;
+ return this;
+ }
+
+ /**
+ * Checks whether the 'orderId' field has been set.
+ * Unique id of the order.
+ * @return True if the 'orderId' field has been set, false otherwise.
+ */
+ public boolean hasOrderId() {
+ return fieldSetFlags()[0];
+ }
+
+
+ /**
+ * Clears the value of the 'orderId' field.
+ * Unique id of the order.
+ * @return This builder.
+ */
+ public com.acme.example.kafka.models.Order.Builder clearOrderId() {
+ fieldSetFlags()[0] = false;
+ return this;
+ }
+
+ /**
+ * Gets the value of the 'itemId' field.
+ * Id of the ordered item.
+ * @return The value.
+ */
+ public java.lang.String getItemId() {
+ return itemId;
+ }
+
+
+ /**
+ * Sets the value of the 'itemId' field.
+ * Id of the ordered item.
+ * @param value The value of 'itemId'.
+ * @return This builder.
+ */
+ public com.acme.example.kafka.models.Order.Builder
setItemId(java.lang.String value) {
+ validate(fields()[1], value);
+ this.itemId = value;
+ fieldSetFlags()[1] = true;
+ return this;
+ }
+
+ /**
+ * Checks whether the 'itemId' field has been set.
+ * Id of the ordered item.
+ * @return True if the 'itemId' field has been set, false otherwise.
+ */
+ public boolean hasItemId() {
+ return fieldSetFlags()[1];
+ }
+
+
+ /**
+ * Clears the value of the 'itemId' field.
+ * Id of the ordered item.
+ * @return This builder.
+ */
+ public com.acme.example.kafka.models.Order.Builder clearItemId() {
+ itemId = null;
+ fieldSetFlags()[1] = false;
+ return this;
+ }
+
+ /**
+ * Gets the value of the 'userId' field.
+ * Id of the user who ordered the item.
+ * @return The value.
+ */
+ public java.lang.String getUserId() {
+ return userId;
+ }
+
+
+ /**
+ * Sets the value of the 'userId' field.
+ * Id of the user who ordered the item.
+ * @param value The value of 'userId'.
+ * @return This builder.
+ */
+ public com.acme.example.kafka.models.Order.Builder
setUserId(java.lang.String value) {
+ validate(fields()[2], value);
+ this.userId = value;
+ fieldSetFlags()[2] = true;
+ return this;
+ }
+
+ /**
+ * Checks whether the 'userId' field has been set.
+ * Id of the user who ordered the item.
+ * @return True if the 'userId' field has been set, false otherwise.
+ */
+ public boolean hasUserId() {
+ return fieldSetFlags()[2];
+ }
+
+
+ /**
+ * Clears the value of the 'userId' field.
+ * Id of the user who ordered the item.
+ * @return This builder.
+ */
+ public com.acme.example.kafka.models.Order.Builder clearUserId() {
+ userId = null;
+ fieldSetFlags()[2] = false;
+ return this;
+ }
+
+ /**
+ * Gets the value of the 'quantity' field.
+ * How much was ordered.
+ * @return The value.
+ */
+ public double getQuantity() {
+ return quantity;
+ }
+
+
+ /**
+ * Sets the value of the 'quantity' field.
+ * How much was ordered.
+ * @param value The value of 'quantity'.
+ * @return This builder.
+ */
+ public com.acme.example.kafka.models.Order.Builder setQuantity(double
value) {
+ validate(fields()[3], value);
+ this.quantity = value;
+ fieldSetFlags()[3] = true;
+ return this;
+ }
+
+ /**
+ * Checks whether the 'quantity' field has been set.
+ * How much was ordered.
+ * @return True if the 'quantity' field has been set, false otherwise.
+ */
+ public boolean hasQuantity() {
+ return fieldSetFlags()[3];
+ }
+
+
+ /**
+ * Clears the value of the 'quantity' field.
+ * How much was ordered.
+ * @return This builder.
+ */
+ public com.acme.example.kafka.models.Order.Builder clearQuantity() {
+ fieldSetFlags()[3] = false;
+ return this;
+ }
+
+ /**
+ * Gets the value of the 'description' field.
+ * Description of item.
+ * @return The value.
+ */
+ public java.lang.String getDescription() {
+ return description;
+ }
+
+
+ /**
+ * Sets the value of the 'description' field.
+ * Description of item.
+ * @param value The value of 'description'.
+ * @return This builder.
+ */
+ public com.acme.example.kafka.models.Order.Builder
setDescription(java.lang.String value) {
+ validate(fields()[4], value);
+ this.description = value;
+ fieldSetFlags()[4] = true;
+ return this;
+ }
+
+ /**
+ * Checks whether the 'description' field has been set.
+ * Description of item.
+ * @return True if the 'description' field has been set, false otherwise.
+ */
+ public boolean hasDescription() {
+ return fieldSetFlags()[4];
+ }
+
+
+ /**
+ * Clears the value of the 'description' field.
+ * Description of item.
+ * @return This builder.
+ */
+ public com.acme.example.kafka.models.Order.Builder clearDescription() {
+ description = null;
+ fieldSetFlags()[4] = false;
+ return this;
+ }
+
+ @Override
+ @SuppressWarnings("unchecked")
+ public Order build() {
+ try {
+ Order record = new Order();
+ record.orderId = fieldSetFlags()[0] ? this.orderId :
(java.lang.Integer) defaultValue(fields()[0]);
+ record.itemId = fieldSetFlags()[1] ? this.itemId : (java.lang.String)
defaultValue(fields()[1]);
+ record.userId = fieldSetFlags()[2] ? this.userId : (java.lang.String)
defaultValue(fields()[2]);
+ record.quantity = fieldSetFlags()[3] ? this.quantity :
(java.lang.Double) defaultValue(fields()[3]);
+ record.description = fieldSetFlags()[4] ? this.description :
(java.lang.String) defaultValue(fields()[4]);
+ return record;
+ } catch (org.apache.avro.AvroMissingFieldException e) {
+ throw e;
+ } catch (java.lang.Exception e) {
+ throw new org.apache.avro.AvroRuntimeException(e);
+ }
+ }
+ }
+
+ @SuppressWarnings("unchecked")
+ private static final org.apache.avro.io.DatumWriter<Order>
+ WRITER$ =
(org.apache.avro.io.DatumWriter<Order>)MODEL$.createDatumWriter(SCHEMA$);
+
+ @Override public void writeExternal(java.io.ObjectOutput out)
+ throws java.io.IOException {
+ WRITER$.write(this, SpecificData.getEncoder(out));
+ }
+
+ @SuppressWarnings("unchecked")
+ private static final org.apache.avro.io.DatumReader<Order>
+ READER$ =
(org.apache.avro.io.DatumReader<Order>)MODEL$.createDatumReader(SCHEMA$);
+
+ @Override public void readExternal(java.io.ObjectInput in)
+ throws java.io.IOException {
+ READER$.read(this, SpecificData.getDecoder(in));
+ }
+
+ @Override protected boolean hasCustomCoders() { return true; }
+
+ @Override public void customEncode(org.apache.avro.io.Encoder out)
+ throws java.io.IOException
+ {
+ out.writeInt(this.orderId);
+
+ out.writeString(this.itemId);
+
+ out.writeString(this.userId);
+
+ out.writeDouble(this.quantity);
+
+ out.writeString(this.description);
+
+ }
+
+ @Override public void customDecode(org.apache.avro.io.ResolvingDecoder in)
+ throws java.io.IOException
+ {
+ org.apache.avro.Schema.Field[] fieldOrder = in.readFieldOrderIfDiff();
+ if (fieldOrder == null) {
+ this.orderId = in.readInt();
+
+ this.itemId = in.readString();
+
+ this.userId = in.readString();
+
+ this.quantity = in.readDouble();
+
+ this.description = in.readString();
+
+ } else {
+ for (int i = 0; i < 5; i++) {
+ switch (fieldOrder[i].pos()) {
+ case 0:
+ this.orderId = in.readInt();
+ break;
+
+ case 1:
+ this.itemId = in.readString();
+ break;
+
+ case 2:
+ this.userId = in.readString();
+ break;
+
+ case 3:
+ this.quantity = in.readDouble();
+ break;
+
+ case 4:
+ this.description = in.readString();
+ break;
+
+ default:
+ throw new java.io.IOException("Corrupt ResolvingDecoder.");
+ }
+ }
+ }
+ }
+}
+
+
+
+
+
+
+
+
+
+
